13401523 has 2 divisors, whose sum is σ = 13401524. Its totient is φ = 13401522.

The previous prime is 13401503. The next prime is 13401539. The reversal of 13401523 is 32510431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13401523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13401523.

It is not a weakly prime, because it can be changed into another prime (13401503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6700761 + 6700762.

It is an arithmetic number, because the mean of its divisors is an integer number (6700762).

Almost surely, 2^13401523 is an apocalyptic number.

13401523 is a deficient number, since it is larger than the sum of its proper divisors (1).

13401523 is an equidigital number, since it uses as much as digits as its factorization.

13401523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13401523 is about 3660.8090635814. The cubic root of 13401523 is about 237.5297720757.

Adding to 13401523 its reverse (32510431), we get a palindrome (45911954).

It can be divided in two parts, 13401 and 523, that added together give a square (13924 = 118²).

The spelling of 13401523 in words is "thirteen million, four hundred one thousand, five hundred twenty-three".